Development of plastic scintillators loaded with perovskite quantum dots and wavelength shifting molecules

Atsushi Sato, Yutaka Fujimoto, Keisuke Asai, Masanori Koshimizu

研究成果: ジャーナルへの寄稿学術論文査読

抄録

We have deloveloped plastic scintillators loaded with perovskite quantum dots (QDs) to obtain efficient scintillation and enhanced detection efficiency of high-energy photons such as X-rays and gamma rays. In previous studies, the loading of the perovsite QDs was not successful to achieve efficient scintillation owing to the severe self-absorption of the QD emission, which is caused by small Stokes shift of the QDs. In the present study, we added wavelength shifting molecules to suppress the self-absorption. Among three samples, we have succeeded in enhancement in the scintillation light yield and shortening of the scintillation decay by the suppression of the self-absorption in polustyrene-based plastic scintillators added with butyl-PBD, QD-P450, and Coumarin6, and butyl-PBD, QD-P510, and Nile red. This result indicates that it is necessary to avoid the self-absorption to fully exploit the fast and efficient emission of the perovskite QDs.

本文言語英語
論文番号01SP06
ジャーナルJapanese Journal of Applied Physics
63
1
DOI
出版ステータス出版済み - 2024 1月 1

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